function seeDoctor(message) {
    console.log("医生了解病情...");
    return "sick";
}

function pickDrug(sick,callback){
   if (sick =='sick'){
       callback(sick);
   }
}

function seeDoctor2(){
    console.log('进一步了解病情！')
}

module.exports={
    seeDoctor,
    pickDrug,
    seeDoctor2
}
